27130605 has 8 divisors (see below), whose sum is σ = 43408992. Its totient is φ = 14469648.

The previous prime is 27130601. The next prime is 27130637. The reversal of 27130605 is 50603172.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27130605 - 2² = 27130601 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27130601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 904339 + ... + 904368.

It is an arithmetic number, because the mean of its divisors is an integer number (5426124).

Almost surely, 2^27130605 is an apocalyptic number.

It is an amenable number.

27130605 is a deficient number, since it is larger than the sum of its proper divisors (16278387).

27130605 is a wasteful number, since it uses less digits than its factorization.

27130605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808715.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 27130605 is about 5208.7047334246. The cubic root of 27130605 is about 300.4829443542.

Adding to 27130605 its reverse (50603172), we get a palindrome (77733777).

It can be divided in two parts, 271 and 30605, that added together give a triangular number (30876 = T₂₄₈).

The spelling of 27130605 in words is "twenty-seven million, one hundred thirty thousand, six hundred five".